Wikipedia
Sockington
Sockington (also known as "Sockamillion" or "Socks") is a domestic cat who lives in Waltham, Massachusetts. He has gained large-scale fame via the social networking site Twitter; his co-owner, Jason Scott, an archivist and Internet historian, has been regularly posting from Sockington's Twitter account since late 2007. As of May 2010, Sockington's account has over 1.5 million followers, many of which are pet accounts themselves.
Sockington is a grey and white domestic shorthaired cat; he was found as a stray outside a Boston subway station in 2004.
In July 2014, Parade magazine called Sockington a "Pet Power Player" and named him #1 in their list of pet social media sensations.